Baking-oven



2 Sheets-Sheet 1.

(No Model.)

A. CRUMBIE.

BAKING OVEN.

PatentedJune 18, 1889.

N PETERS. Fhaloliulognpbcr. Wnhinginn. D C.

(N0 Model.) 2 Sheets-Sheet 2.

A. ORUMBIE.

BAKING OVEN.

No. 405.304. Patented June 18, 1889.

N, PETERS. Pmwumo nohnr. Washington. D. c.

UNiTn STATES ALEXANDER CRUMBIE, OF ARLINGTON, NElV JERSEY.

BAKING-OVEN.

' SPECIFICATION forming part of Letters Patent No. 405,304, dated June18, 18 89.

Application filed January 29, 1889 Serial No. 297,930. (No model.)

To all whom it may concern.-

, Be it known that I, ALEXANDER ORUMBIE, a citizen of the United States,residing at Arlington, county of- Hudson, State ofNew Jersey, haveinvented certain new and useful simple and compact, and their efficiencyis greatly increased.

In the accompanying drawings, to which I will now refer, Figure 1 is alongitudinal vertical section of my improved reel oven, and Fig. 2 is atransverse vertical section of the same. Fig. 3 is a detached elevationof one of the baking-pans.

The body of the oven consists of the side walls a a, the end walls a aand the arched roof a inclosing the chamber containing the reel andfurnace. The left-hand end or front wall a is inclined inward at itslower part, and is provided with the charging and discharging opening ormouth I), and the righthand end or rear wall. a is provided withopenings for affording access to the fires and ash-pit, as shown. Themouth I) is placed but a small distance above the furnace-openings inthe opposite Wall and in the inwardly-inclined portion of the wall, andthus the inner end of the mouth I) is brought close to the baking-pans.The inward inclination of the lower portion of this front wall a permitsforming a recess therein at the mouth I).

The reel consists of a frame mounted on a shaft; This shaft 0 hasbearings in the side walls a a of the furnace, and motion is imparted toit by a belt and pulleys or any suitable device usual in this class offurnaces. Two disks 0 o are secured to the shaft cone at each end-injuxtaposition to the bearings, and these disks are provided withgrooves, in which are bolted the radial supporting-arms Z d. The radialarms cl cl of each set are joined together at their outer ends by thestruts e e, and the correspondingradial arms of. the two sets areconnected by the tie-rods ff, thus forming a light and strong frame orreel.

The bakingpans g g are pivoted to the reel at the outer ends of theradial arms (I d on the bolts which join the radial arms to the struts ec by means of lugs on the ends of the pans fitting over thesebolts.These baking-pans g g are composed of flat platesof sheet metal, havingflanges at their ends, from which the suspending-lugs project, andbracing-bars of angle and'Tiron are secured longitudinally to the pans.One of these angle-irons in each pan is so placed that it forms a backflange g for the pan. The pans are swungjust below their point ofsuspension, and as in this I position their equilibrium would not besufficiently stable for practical purposes counterweights are placedbelow the pans. These counter-weights h are held on the curved arms h,preferably shaped to an arc of a circle, each arm being secured at bothof its ends to the pan, and two arms h,'with counter-weights h, aresecured to each pan g, one at each end of the pan.

The counter-weights are fitted to move freely 011 the arms h, and can beclamped in any desired positions thereon by means of the set-screws d.It will be observed that the greatest radius of a pan and attachedparts, taking the suspension-point as a center, but little exceeds halfthe width of a pan.

The furnace is placed at the back of the oven. It is of ordinaryconstruction, being inclosed at the sides by masonry walls j A centralpartition-Wall j divides it into two compartments, each having a set ofgrate-bars kand suitable stoking and ash-pit openings. The products ofcombustion pass directly into the chamber and escape through openings inthe roof, as ordinarily. To permit the pansto approach close to thefire, grooves j j may be provided in the furnace-walls j for the passageof the counter-weights 72 and arms 77, as shown.

Heretofor'e in ovens of this class the dimensions of a reel large enoughto accommodate a sufficient number of pans and allow them to swing clearof each other in all positions have been such as to make the oven aninconveniently-large structure, occupying in height two floors of abuilding. In my construction, as above set forth, the pans and attachedcounter-weights are included within a radius not larger than thatresulting from the actual dimensions of the pans. This enables the pansto be placed much closer together than in any other constructionheretofore used, and thus permits the use of a reel of smallercircumference without reducing the number or dimensions of the pans. Thereduction in the size of the reel permits a cone spending reduction inthe dimensions of the inelosing-ehamber, and thus a coi'isiderablesaving of space is hadso much that the device can be fitted up inandoceupy but one floor of a building. There is also a large savin g inthe materials of construction and in the fuel consumed resulting fromthis reduction in the dimensions of the reel and chamber. It hasheretofore been necessary to place the mouth for the insertion andremoval of the material to be baked in the upper part of the oven and onthe floor above that at which the lower part of the oven and thefurnace-open ings therein have'been located, and the furnacc o 'ieningshave heretofore been made in the front wvall. In my construction. thismonth Z) is placed but little higher than the turnacc-openiiigs and thefurnace is placed at the back of the oven, so that the-mouth and thel'urnace-openings can be used from the same horizontal level or floor,and the recess formed in the oven-walls at this month etlectsconsiderable ec'onomyin working-space. Another advantage resulting fromplacing the mouth I) in the lower part of the furnace is, that theheated gases and vapors that till the chamber, resulting from thecombustion of the fin-mice and the evaporation of the moisture in thedough, do not to any appreciable extent escape through this month. Themouth I; and the furnace-openings in my construction are placed inopposite walls of the oven, and the pans g, therefore, always have theback flange y toward the tire. This back liz'tnge 5 n'otects thematerial on the pans from the direct rzuiliation of the tire, and thuspermits the pans to approach closely thereto without danger of burningor scorching the material to be baked.

It is evident that placing the furnace close to the pans on the reelalso permits a considerable reduction in the height of the oven. Theermnter-weights 72, being placed one at each end of a pan, do notinterfere with this feature, as grooves are out in the furnacewalls toafford them clearance.

The use of two independent adjustable weights 71. for each pan gone ateach end of the panand the fact that each arm 71 is secured at both endsto the pan, afford a simple and etlicient means for correcting anywarping or twisting of the pans without af footing their(llllilllji'lllllh' \Vheuevcr any tendency to warping appears in a pan,the

weight at this end of the pan can be pushed up on the curved arm h to aposition in which it will exert a sufficient downward pull. to restorethe pan to proper shape, and then the weight on the other end of thesame pan can be pushed up on its curved arm a like distance in theopposite direction, so as to exactly counterbalance all tendency to tipthe pan. Fig. 3 shows a pan g with the counter-weights 71/ adjusted inthis manner, and the location of a coui'iter-wei'ght at each end of apan tends to prevent any warping of the pans, while the adjustability ofthese weights permits the pans to be nicely balanced.

I do not herein claim, broadly, a counterweight suspended below the panof a reel i oven, as such device is shown in Letters Patent No. 158,016,granted to myself and 1). Donald on January 1.), 1875. i

Having now described my invention, what I claim, and desire to secure byl'a'etters latent, is

1. A baking-pan for reel ovens provided with arms depending therefrom ateach end of the pan, both ends of each arm being secured to the pan, andcounter-weights adjustably secured to the arms, substantially as shownand described.

2. A baking-pan for reel ovens provided with the curved arms h,depending therefrom at each end of the pan, both ends of each arm beingsecured to the pan, and counteraveights 71 adapted to be moved along thearms and adj ustably secured to the. arms, substantially as shown anddescribed.

3. In a baking-oven, in combination, a revolving reel, the pans g,suspended from the reel, each pan being arranged close to its point ofsuspension, and the adjustable counter-weights 7t on curved arms 71.,secured at each end to and depending from the pans g, substantially asshown and described.

1- In a baking-oven, in combinatim'i, the oven-walls, the front wallbeing inclined inward at its lower part, the mouth Z) in the inclinedlower part thereof, the revolving reel pivoted in the oven-walls, thepans r suspended from the reel, each pan bein arranged close to itspoint of SUSP0l1SiOll,Llltl the adjustable counter-weights h on curvedarms 72/, secured to and depending from the pans g substantially asshown and described.

In a baking-oven, in combination, the oveirwalls, the front wall beinginclined inward at its lower part, the mouth I) in the inclined lowerpart thereof, the revolving reel pivoted in the side walls, the pans g,suspended from the reel, each pan being arranged close to its point ofsuspension, the adjustable counter-weights h on curved arms dependingfrom the pans, and the furnace 7-, located at the back of the oven,substantially shown and described.

ALEXANI) ER RIUM Bl hi.

'Witnesses:

l IENRY I). W1 LLIAMS, Eowln Scene.

ITO

